Protesters march through central Kuala Lumpur during a rally in support of jailed Malaysian opposition leader Anwar Ibrahim, March 7, 2015.

Those taking part in the rally had earlier gathered at various spots in the city - Masjid Jamek LRT station, Central Market and the PAS headquarters at Jalan Raja Laut - before converging at the Sogo shopping complex at around 4pm, causing traffic to come to a standstill.

He also said Nik Nazmi had been called to have his statement recorded at the Dang Wangi district police headquarters today.

Asked if Nurul Izzah would also have her statement taken after she was reported on an online portal as saying that she had received the letter, he said: "All the organisers and leaders at the rally will be called."

In Ipoh, Home Minister Datuk Seri Dr Ahmad Zahid Hamidi claimed that the #KitaLawan rally was meant to provoke the security forces, and urged the people to ac­­cept the court decision on Anwar.